/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.cmd;

import com.je.bpm.engine.ActivitiIllegalArgumentException;
import com.je.bpm.engine.ActivitiObjectNotFoundException;
import com.je.bpm.engine.impl.interceptor.Command;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.ExecutionEntity;
import com.je.bpm.engine.impl.persistence.entity.ExecutionEntityManager;
import com.je.bpm.engine.runtime.Execution;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;

/**
 查找活动活动 ID Cmd
 */
public class FindActiveActivityIdsCmd implements Command<List<String>>, Serializable {

    private static final long serialVersionUID = 1L;
    protected String executionId;

    public FindActiveActivityIdsCmd(String executionId) {
        this.executionId = executionId;
    }

    @Override
    public List<String> execute(CommandContext commandContext) {
        if (executionId == null) {
            throw new ActivitiIllegalArgumentException("executionId is null");
        }

        ExecutionEntityManager executionEntityManager = commandContext.getExecutionEntityManager();
        ExecutionEntity execution = executionEntityManager.findById(executionId);

        if (execution == null) {
            throw new ActivitiObjectNotFoundException("execution " + executionId + " doesn't exist", Execution.class);
        }

        return findActiveActivityIds(execution);
    }

    public List<String> findActiveActivityIds(ExecutionEntity executionEntity) {
        List<String> activeActivityIds = new ArrayList<String>();
        collectActiveActivityIds(executionEntity, activeActivityIds);
        return activeActivityIds;
    }

    protected void collectActiveActivityIds(ExecutionEntity executionEntity, List<String> activeActivityIds) {
        if (executionEntity.isActive() && executionEntity.getActivityId() != null) {
            activeActivityIds.add(executionEntity.getActivityId());
        }

        for (ExecutionEntity childExecution : executionEntity.getExecutions()) {
            collectActiveActivityIds(childExecution, activeActivityIds);
        }
    }

}
